Process of bleaching and conserving yeast.



UNITED STATES PATENT OFFICE.

oswAI'm nnn'rscnnn, or enmm, GERMANY; ASSIGNOB 'ro ALOIS zncxnnnonr, or

' omcrnns'rr, onro.

PROCESS OF BLEAGHING AND CONSERVING YEAST.

No Drawing,

To all whom it may concern:

Be it'known that I, OswALD Hnn'momin, a subject of the King of Saxon and a resident of Grimma, Saxony, ermany, have invented certain new and useful Improvements in Processes of Bleaching and Conserving Yeast, of which the following is a specification. v

The invention relates to a process .for conserving yeast.

For the purpose of producing yeast which can be kept without spoiling the water must;

be abstracted therefrom. Thisdrying process heretofore occasioned considerable difii culty, because when c rrled out at a low temperature, it occup' d somuch time that the yeast became decomposed, and, consequently, soft, sticky and bad smelling, while 1 when carried out at a high temperature the process although indeed. quicker, resulted in the yeast losing 1nuchabout 50%-of its leavening property. By drying in a vacuum better results were also not obtained, because. in order to maintain the leavening property of the yeast only low temperatures could, be employed, and," as a consequence, the drying process still required considerable time and-the yeast assumed an unpleasant cheeselike smell.

The invention consists in treating the Specification of Letters Patent.

Application filed October 27, 19 11. Scirial No. 657,123.

tion.

In testimony, that I claim the foregoing.

Patented Mar. 18,1913.

'-the yeast is bleached and consequently, im-

proved in appearance; The process is either carried out by the yeast being previously washed with water containing ozone, or by its being brought into contact with ozone, either previous to, or during, the dr ng process.

ters Patent of the. United States is:

The process of bleaching and conserving %hat I claim and-desireto secure by Letyeast, which consists in subjecting the yeast to the action of ozone and to a drying operaas my invention, I have signed my name in presence of two subscribing witnesses.

OSWALD nnn'rsonnn.

Witnesses:

Enron HENTSGHIEL,

RUDOLPH FRICKE. 

